US5722431A - Method and plant for treating tobacco leaves for the production of cut tobacco - Google Patents

Method and plant for treating tobacco leaves for the production of cut tobacco Download PDF

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Publication number
US5722431A
US5722431A US08/751,481 US75148196A US5722431A US 5722431 A US5722431 A US 5722431A US 75148196 A US75148196 A US 75148196A US 5722431 A US5722431 A US 5722431A
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United States
Prior art keywords
stems
lamina material
conditioned
approximately
set forth
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Expired - Lifetime
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US08/751,481
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English (en)
Inventor
Wolfgang Metzner
Bernd Spallek
Arno Weiss
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RJ Reynolds Tobacco Co
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British American Tobacco Investments Ltd
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Priority claimed from DE19543262A external-priority patent/DE19543262C2/de
Application filed by British American Tobacco Investments Ltd filed Critical British American Tobacco Investments Ltd
Assigned to BRITISH-AMERICAN TOBACCO (GERMANY) reassignment BRITISH-AMERICAN TOBACCO (GERMANY) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: METZNER, WOLFGANG, SPALLEK, BERND, WEISS, ARNO
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Publication of US5722431A publication Critical patent/US5722431A/en
Assigned to BRITISH-AMERICAN TOBACCO (GERMANY) GMBH reassignment BRITISH-AMERICAN TOBACCO (GERMANY) GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: B.A.T. CIGARETTENFABRIKEN GMBH
Assigned to BROWN & WILLIAMSON TOBACCO CORPORATION reassignment BROWN & WILLIAMSON TOBACCO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRITISH-AMERICAN TOBACCO (GERMANY) GMBH
Assigned to BROWN & WILLIAMSON U.S.A., INC. reassignment BROWN & WILLIAMSON U.S.A., INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROWN & WILLIAMSON TOBACCO CORPORATION
Assigned to JPMORGAN CHASE BANK reassignment JPMORGAN CHASE BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: R.J. REYNOLDS TOBACCO COMPANY
Assigned to R.J. REYNOLDS TOBACCO COMPANY reassignment R.J. REYNOLDS TOBACCO COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: BROWN & WILLIAMSON U.S.A., INC.
Assigned to JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT reassignment JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: R.J. REYNOLDS TOBACCO COMPANY
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B7/00—Cutting tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B5/00—Stripping tobacco; Treatment of stems or ribs
    • A24B5/16—Other treatment of stems or ribs, e.g. bending, chopping, incising

Definitions

  • the invention relates to a method and a plant for treating tobacco leaves for the production of cut tobacco for smokable articles.
  • Tobacco leaves from which smokable articles, particularly cigarettes as well as fine-cut for self-produced cigarettes, are obtained, consist of lamina and stems which, on the one hand, greatly differ in consistency and, on the other, greatly differ in taste perception and thus influence both the technique in preparing the tobacco and the taste perception of the respective smokable article to a very great extent, albeit differingly.
  • a mixed solution is disclosed by DE 40 29 567 A1 in which whole leaves are processed into a blend of lamina particles and substantially intact stem pieces in a method of size reduction employing shear forces; the stem pieces need to be subsequently separated out, the lamina particles then being directly supplied to cigarette production. Transferring this method into actual practice also failed due to the taste problems still waiting to be solved.
  • a further method is disclosed by GB 2,026,298 A in which tobacco leaves are reduced in size to particles which are suitable for cigarette production.
  • the leaf particles are fractionated into a more heavy fraction containing the stems and a lighter lamina fraction free of stems, the heavier fraction being threshed, so as, in this case too, to still separate the lamina from the stems.
  • the separated lamina and the lighter fraction originally obtained are then blended to be supplied to cigarette production.
  • stems and lamina are packaged separate from each other and shipped to the place of deployment where the so-called "primary tobacco preparation" is done.
  • the stems, on the one hand, and the lamina, on the other are treated separately from each other, namely conditioned, i.e. subjected to moisture and heat treatment, cut and dried, before being finally blended and then subjected jointly to further processing, as a rule involving the addition of flavoring materials.
  • the drawback in this generally used method is that in the primary tobacco preparation the stems, on the one hand, and lamina material, on the other, need to be run on processing lines totally separated from each other, in the so-called “stem line” and the so-called “lamina line”, each of which comprise conditioning means, cutting means, saucing means for applying casings, heating means and driers.
  • stem line rolls are also needed for the purpose of rolling out the stems prior to the cutting procedure to generate the "CRS", i.e. the cut and rolled stem pieces which are then added to the lamina material directly upstream of the flavor drum.
  • winnowings consist also of tobacco, so that attempts should be made to make use of it for cigarette production.
  • a variety of methods are known for processing winnowings, for instance, the processing into reconstituted tobacco or recycling.
  • the material obtained by these means is added to the normal cut tobacco during the primary tobacco preparation.
  • the invention is thus based on the object of providing a method and a plant for the treatment of tobacco leaves for the production of cut tobacco for smokable articles in which the aforementioned drawbacks are not encountered.
  • This object is achieved for the stem material by a method of treating tobacco leaves for the production of cut tobacco for smokable articles, wherein non-rolled stems are conditioned and precut separately from the lamina material, lamina material is conditioned separately from the stems, stems and lamina material are subsequently blended and then lamina material and stems are cut and dried jointly, and by a plant for the treatment of tobacco leaves for the production of cut tobacco for smokable articles, comprising a conditioning means for the stems of the tobacco leaves separated from the lamina material, a conditioning means for the lamina material of the tobacco leaves, a precutting means for the stems, a cutting means for a blend of said conditioned, non-rolled, precut stems and said conditioned and uncut lamina material, and at least one drier for said cut blend of lamina material and stems.
  • this object is achieved by a method of treating tobacco leaves for the production of cut tobacco for smokable articles, wherein winnowings are conditioned and rolled separately from said lamina material, lamina material is conditioned separately from said winnowings, the rolled winnowings and said lamina material are subsequently blended, and lamina material and winnowings are cut and dried jointly, and by a plant for the treatment of tobacco leaves for the production of cut tobacco for smokable articles, comprising a conditioning means for winnowings, a rolling means for said conditioned winnowings, a conditioning means for the lamina material of said tobacco leaves, a cutting means for a blend of said conditioned, rolled winnowings and said conditioned and uncut lamina material, and at least one drier for said cut blend of lamina material and winnowings.
  • the advantages achieved by the invention are based on the fact that only a relatively small proportion of the "stem line" employed hitherto, namely a short stem line including a conditioning means and a stem precutter, are employed, whilst the rolls, the moisturizing and the heating means as well as the drier for the stems can be eliminated.
  • the savings made possible thereby both as regards investments and operating costs, particularly as regards personnel, are considerable.
  • the measures claimed permit homogenous blending of lamina and stem material so that a highly consistent taste perception materializes.
  • the degree to which use is made of the raw tobacco is higher since due to the pronounced shortening in the length of the stem line much less dust materializes, i.e. the valuable "tobacco leaf” raw material is made use of very much more effectively. This is also contributed to by the fact that no drier is needed in the short stem line which, as is known from experience, contributes towards tobacco degradation.
  • the tobacco stems and/or the lamina are provided with a casing.
  • the corresponding saucing means in principle, may be arranged at any suitable location in tobacco preparation and both the stem and the lamina material can be provided with a casing, it has turned out to be particularly expedient when only the lamina is treated this way.
  • the casing is then done preferably after lamina conditioning by means of a saucing means.
  • stems prior to precutting are conditioned to a moisture content of approximately 22% to approximately 26%, particularly approximately 24%. These values apply to the % by weight moisture on a wet basis.
  • the method of determining moisture is oven drying for 3 hours at 80° C.
  • the moisture values according to the invention represent, as compared to a stem moisture content of approximately 30%, as cited in the "Tobacco Encyclopedia", a substantial improvement, since, on the one hand, the relative high moisturization is problematic and, on the other, the moisturizing necessary in this case also reduces the expense of later drying.
  • stems premoisturized merely relatively slightly may be left standing longer without their properties changing to any remarkable degree, whilst the storage time for stems having a moisture content of approximately 30% is greatly restricted.
  • the stems may be additionally provided with a casing. This may be done either prior to stem conditioning or after leaving the cutter by a saucing means.
  • the stems are precut to a cutting width of approximately 0.1 to approximately 0.3 mm, particularly approximately 0.2 mm.
  • the short stem line according to the invention works substantially with the same values both for cigarettes and for fine-cut, a distinction needs to be made between fine-cut and cigarettes as regards conditioning the lamina.
  • the lamina is conditioned to a moisture content of approximately 17 to approximately 25%, particularly ca. 17.5%
  • the lamina is conditioned to a moisture content of approximately 23 to approximately 25%, particularly approximately 24%.
  • the blending ratio between lamina and cut stems may be varied, depending on the requirements on the smokable article to be produced. Thus, lower priced product variants receive a higher stem percentage, for instance. For branded cigarettes the stem percentage of 30%, relative to the mass a whole, is not exceeded usually, it being in particularly in the range of approximately 5% to 25%.
  • the blend of stem and lamina materials is heated and moisturized, preferably in a so-called preheat drum, operating with water and steam, to achieve a moisture content in the range of approximately 18 to 39%, particularly approximately 19.5 to approximately 24%, preferably approximately 22.5%.
  • the blend is dried, expediently in a hot-air drier which brings the moisture content of the blend to approximately 14%.
  • the advantages achieved by the invention are based on producing a tobacco material by a simple process, namely by conditioning and subsquently rolling the winnowings, which can be blended with the lamina without necessitating any further processing step before being cut and dried. In this way, the valuable "winnowings" raw material is fed to tobacco processing at little expense as regards investments and operating costs.
  • the conditioned winnowings are rolled as flat as possible, i.e. with a "gap width" or "nip” of less than 0.1 mm, particularly with a nip of approximately 0 mm, so that small, flat pieces of tobacco materialize which can be blended with the lamina with no problem.
  • the rolled winnowings have a moisture content of approximately 25% to approximately 40%, particularly approximately 30 to approximately 35%.
  • three parallel lines may be installed, namely a lamina line, a stem line and a winnowings line.
  • the three different materials obtained thereby are then blended in a blending bin and jointly cut before being fed to further processing.
  • FIG. 1 shows a first embodiment of a plant for producing cut tobacco for cigarettes from stems and lamina material
  • FIG. 2 shows a somewhat modified embodiment of the plant shown in FIG. 1,
  • FIG. 3 shows a second embodiment of a plant for producing cut tobacco for cigarettes from winnowings and lamina
  • FIG. 4 shows a third embodiment of a plant for producing cut tobacco for cigarettes from stems, lamina and winnowings.
  • the plant shown in FIG. 1 processes stems, on the one hand, and lamina, on the other, which have been separated from each other in a prior stage (not shown), often in the country of origin of the tobacco leaves, and are now to be fed to the stem line, on the one hand, and the lamina line, on the other.
  • the optional devices are indicated by dotted boxes.
  • the stems reach a saucing means in which they are provided with casings before entering a steam tunnel serving as a conditioning means which operates with water and steam so that the stems leave the conditioning with a moisture content of approximately 24%.
  • the conditioned stems are held covered for roughly 2 hours and are then fed to a stem precutter.
  • the preferred cutting width is about 0.2 mm.
  • the precut stems are, where necessary, provided again with a casing, only one of the two saucing means being needed as a rule.
  • the precut stems are then fed to a charging chute leading to a blending bin to which also preconditioned lamina material is supplied.
  • a steam drum for the lamina material as a conditioning means in which the lamina material for cigarette production receives a moisture content of approximately 17.5% and lamina material for fine-cut production receives a moisture content of approximately 24%.
  • a saucing means is provided for the lamina material.
  • the proportion of stems in the blend in the blending bin is of the order of approximately 14% stem content relative to the blend as a whole.
  • the blend of stems and lamina material from the blending bin is cut with a cutting width of approximately 0.85 mm for the production of cigarettes and a cutting width of approximately 0.45 mm for fine-cut production, there being practically no change in the moisture content of the blend.
  • the cut blend of lamina material and stems reaches a conditioning or preheating cylinder where it is moisturized with water and steam and heated so that it leaves the conditioning cylinder with a moisture content of approximately 22%.
  • this blend is dried in a hot-air drier from which it emerges with a moisture content of approximately 14.5% and is then forwarded to the further steps of the primary tobacco preparation, for example a cooling and sieve drum as well as a flavor drum.
  • the modified embodiment shown in FIG. 2 differs from the embodiment shown in FIG. 1 merely by the conditioned, non-rolled and cut stems being further subjected to an expansion method, as is known, for example, from the German patent No. 37 10 677. From the expansion device the expanded stems are supplied to a separator which separates the fluid used for expanding. For this purpose the separator as set forth in European patent No. 0 301 217 may be employed.
  • a winnowing line is provided parallel to the lamina line which has the same configuration as the lamina line as shown in FIGS. 1 and 2, this winnowing line receiving the winnowings resulting in the course of tobacco preparation.
  • the winnowings are conditioned in a steam tunnel which operates with water and steam so that the winnowings leave the conditioning with a moisture content of approximately 30% to 35%.
  • the conditioned winnowings are held covered for roughly 2 hours and are then rolled with a roller having a gap width or nip of approximately 0 mm.
  • the rolled and conditioned winnowings are then supplied via a charging chute to the blending bin which also receives the preconditioned and cased lamina material.
  • the conditioning requirements correspond to those of the embodiment in FIGS. 1 and 2.
  • the blend of winnowings and lamina material leaving the blending bin is further processed in the same way as already described above for the blend of stems and lamina, i.e. cut, preheated and finally dried.
  • FIG. 4 shows an embodiment in which the two embodiments shown in FIGS. 2 and 3 are combined, i.e. the blending bin receives the conditioned, precut and cased stems, the conditioned, cased lamina material as well as the conditioned and rolled winnowings. This blend is then cut, preheated and finally dried.

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US08/751,481 1995-11-20 1996-11-18 Method and plant for treating tobacco leaves for the production of cut tobacco Expired - Lifetime US5722431A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19543262A DE19543262C2 (de) 1995-11-20 1995-11-20 Verfahren und Anlage zur Behandlung von Tabakblättern für die Herstellung von Schnittabak
DE19543262.2 1995-11-20
EP96115458 1996-09-26
EP96115458A EP0774212B1 (de) 1995-11-20 1996-09-26 Verfahren und Anlage zur Behandlung von Tabakblättern für die Herstellung von Schnittabak

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US5722431A true US5722431A (en) 1998-03-03

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JP (1) JPH09163966A (zh)
CN (1) CN1066323C (zh)
AU (1) AU701264B2 (zh)
BR (1) BR9604561A (zh)
CZ (1) CZ293382B6 (zh)
EA (1) EA000060B1 (zh)
MX (1) MX9605667A (zh)
NZ (1) NZ299771A (zh)
PL (1) PL182330B1 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227205B1 (en) * 1997-12-17 2001-05-08 Brown & Williamson Tobacco Corporation Method for treatment of tobacco fine cut
US20040261806A1 (en) * 2002-10-07 2004-12-30 Brown & Williamson Tobacco Corporation Apparatus and method for processing winnowers at a cigarette maker
US20080196731A1 (en) * 2005-02-10 2008-08-21 Uwe Ehling Processing of Tobacco Materials Containing a High Proportion of Tobacco Fines
GB2460499A (en) * 2008-06-02 2009-12-09 Xiamen Tobacco Ind Co Ltd Method for processing burley tobacco in blended type cigarette
CN103263069A (zh) * 2013-05-09 2013-08-28 红云红河烟草(集团)有限责任公司 一种表征叶丝、膨胀丝和梗丝掺配均匀性的方法
CN104223345A (zh) * 2014-10-13 2014-12-24 川渝中烟工业有限责任公司 再造烟叶中烟梗的预处理方法
US9210951B2 (en) 2010-12-23 2015-12-15 Philip Morris Products S.A. Tobacco cut filler including cut rolled stems
EP3354142A1 (en) 2017-01-27 2018-08-01 International Tobacco Machinery Poland Sp. z o.o. Cutting apparatus of tobacco industry, and method for detecting damage to cutting knife in tobacco industry
WO2021171021A1 (en) * 2020-02-27 2021-09-02 British American Tobacco (Investments) Limited Methods for treating tobacco material, apparatus for treating tobacco material, treated tobacco material and uses thereof

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MD1556G2 (ro) * 1999-09-28 2001-05-31 Oleg Parvan Procedeu de prelucrare a tutunului în baloturi
DE102004059388B4 (de) 2004-12-09 2006-11-30 British American Tobacco (Germany) Gmbh Zerfaserung von Tabakmaterial
CA2584344C (en) 2004-12-09 2012-01-17 British American Tobacco (Germany) Gmbh Defibration of tobacco material
TW201032738A (en) * 2009-01-23 2010-09-16 Japan Tobacco Inc Cigarette
GB201012090D0 (en) * 2010-07-19 2010-09-01 British American Tobacco Co Cellulosic material
TW201233345A (en) * 2010-12-23 2012-08-16 Philip Morris Prod Method of treating burley tobacco stems
CN102551189B (zh) * 2012-01-20 2013-06-19 红塔烟草(集团)有限责任公司 一种膨胀梗条的处理工艺
MY169154A (en) * 2013-05-13 2019-02-18 Japan Tobacco Inc Tobacco material, tobacco product to which tobacco material is added, and method for producing tobacco material
CN103976469B (zh) * 2014-05-14 2016-08-24 四川烟草工业有限责任公司 一种降低切梗丝消耗的方法
CN107594605A (zh) * 2017-09-28 2018-01-19 浙江中烟工业有限责任公司 一种烟丝掺配系统
DE102019105417A1 (de) * 2019-03-04 2020-09-10 Tews Elektronik Gmbh & Co. Kg Verfahren zur Verarbeitung von mindestens zwei Eingangsmaterialien

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227205B1 (en) * 1997-12-17 2001-05-08 Brown & Williamson Tobacco Corporation Method for treatment of tobacco fine cut
US20040261806A1 (en) * 2002-10-07 2004-12-30 Brown & Williamson Tobacco Corporation Apparatus and method for processing winnowers at a cigarette maker
US6877516B2 (en) 2002-10-07 2005-04-12 Johnny K. Cagigas Apparatus and method for processing winnowers at a cigarette maker
US20080196731A1 (en) * 2005-02-10 2008-08-21 Uwe Ehling Processing of Tobacco Materials Containing a High Proportion of Tobacco Fines
US7934511B2 (en) 2005-02-10 2011-05-03 British American Tobacco (Germany) Gmbh Processing of tobacco materials containing a proportion of tobacco fines
CN104305517A (zh) * 2005-02-10 2015-01-28 英美烟草（德国）有限公司 含有高比例烟末的烟草材料的处理
GB2460499A (en) * 2008-06-02 2009-12-09 Xiamen Tobacco Ind Co Ltd Method for processing burley tobacco in blended type cigarette
GB2460499B (en) * 2008-06-02 2010-12-15 Xiamen Tobacco Ind Co Ltd Method of producing burley tobacco in blended type cigarette
US9210951B2 (en) 2010-12-23 2015-12-15 Philip Morris Products S.A. Tobacco cut filler including cut rolled stems
CN103263069A (zh) * 2013-05-09 2013-08-28 红云红河烟草(集团)有限责任公司 一种表征叶丝、膨胀丝和梗丝掺配均匀性的方法
CN104223345A (zh) * 2014-10-13 2014-12-24 川渝中烟工业有限责任公司 再造烟叶中烟梗的预处理方法
CN104223345B (zh) * 2014-10-13 2016-03-02 川渝中烟工业有限责任公司 再造烟叶中烟梗的预处理方法
EP3354142A1 (en) 2017-01-27 2018-08-01 International Tobacco Machinery Poland Sp. z o.o. Cutting apparatus of tobacco industry, and method for detecting damage to cutting knife in tobacco industry
WO2021171021A1 (en) * 2020-02-27 2021-09-02 British American Tobacco (Investments) Limited Methods for treating tobacco material, apparatus for treating tobacco material, treated tobacco material and uses thereof
CN115135172A (zh) * 2020-02-27 2022-09-30 英美烟草(投资)有限公司 处理烟草材料的方法、处理烟草材料的装置、处理过的烟草材料及其用途
JP2023515543A (ja) * 2020-02-27 2023-04-13 ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッド タバコ材を処理する方法、タバコ材を処理するための装置、処理されたタバコ材およびその使用
AU2021227449B2 (en) * 2020-02-27 2023-10-26 British American Tobacco (Investments) Limited Methods for treating tobacco material, apparatus for treating tobacco material, treated tobacco material and uses thereof

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CZ293382B6 (cs) 2004-04-14
EA000060B1 (ru) 1998-04-30
AU7184996A (en) 1997-05-29
NZ299771A (en) 1997-11-24
MX9605667A (es) 1997-05-31
PL317059A1 (en) 1997-05-26
CN1066323C (zh) 2001-05-30
BR9604561A (pt) 1998-06-23
PL182330B1 (pl) 2001-12-31
JPH09163966A (ja) 1997-06-24
EA199600098A2 (ru) 1997-06-30
AU701264B2 (en) 1999-01-21
CN1153620A (zh) 1997-07-09
CZ339396A3 (en) 1997-06-11

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